GLACIAL ACTION—SOUTIL AUSTRALIA. 125 
rence of rounded quartz-pebbles, especially on the hill sides, where 
the rain had washed the soil away, is a peculiar feature. These 
quartz pebbles, in common with most of the stones included in 
the Till, show distinct evidences of glaciation. 
The boulder clay rests unconformably on the edges of the 
metamorphic rocks. No glaciated pavement could be seen, and 
to all appearance the line of junction between the two formations 
was rough and uneven. At the same time it must be said that 
the examination was limited, and the bed-rock is so soft and friable 
that it is not adapted for either taking or preserving a glacial 
face. 
The thickness of the Till bed at Cape Jervis is estimated at 
something over 100 feet, and is capped by variegated (? miocene) 
clays and travertine limestone. How far the boulder clay extends 
along the coast in either direction we were unable to ascertain in 
our hurried visit. The outcrop was followed along the northern 
cliffs for about a mile from the light-house without coming to its 
limits. At the furthest point reached the Till is a ver y black 
clay, studded with stones in an irregular manner. A good section 
is seen at this furthest point reached, in a deep washaway about 
3 feet to 6 feet wide, and 15 feet deep. 
SECTION AT CAPE JERVIS. 
SFA LEVEL 
Metamorphic Kocks... : a 
EXTENT OF THE ICE-FIELD. 
The country on the north side of Yankalilla has not been 
examined for glacial features, but from what could be gathered 
from observations made in a journey, by coach, over the “ground, 
